Sash-lock.



M. W. GRISWOLD.

SASH LOCK.

APPLICATION FILED MAB. 5, 190B.

2 SHEETB-SHEET 1.

Patented June 29, 1909;

M. W. GRISWOLD.

SASH LOOK.

APPLICATION FILED MAR.5, 100av Patented June 29, 1909.

2SHEETSSHEBT 2 %M MM, 3.

MERRITT W. GRISVW) L D,

Ol HIGIIWOOD, NEW JERSEY.

SASH-LOCK.

Specification of Letters Patent.

atented June 29, 1909'.

Application filed March 5, 1908. Serial No. 419,246.

To all whom it may concern:

Be it known that I, Mnnnir'r N. Gius- WoLD, a citizen of the United States, residing at Highwood, in the county of Bergen and State of New Jerse have invented a new and useful Sash-Lee of which the following is a specification.

My invention relates to improvements in window sash-locks but more especially to those in railroad cars for automatically lowering the windows part way down by the shaking of the cars and there securely locking them at a point where the incoming dust, cinder-s, etc., will not strike directly into the face and eyes of passengers while the train is moving. I attain this object by the mechanism illustrated in the accompanying drawings in which:

Figure I. is a perspective view of a car window showing a portion of the sash and window frame partly cut away. Fig. II is a side View of the lock case (2) showing the protruding end of the lock bolt (7). Fig.

II. is a front View of the rack or bolt runway. Fig. IV. is zfsectional view of Fig. III taken through its center. Fig. V. is a front View of a car window wherein the full lines show the sash high up at a time when the car is standing still and the dotted lines when )ositively locked at a mint 'iart way down. ig. VI. is a View of t c loclr with its front case cut away. Fig. VII. is a side view of Fig. VI.

Similar characters refer to similar parts throughout the several views.

1 is the window sash, 2* is the lock case or shell, 3- the screws that secure the lock to the sash.

4- is a wide 0 ening in the lock case through which the iolt head has free play, 5 is the tail end of the bolt, 6 is the operating lug on the bolt, 7 is the engaging end of the locking bolt, 8 is an expanding spiral spring for keeping the bolt pushed outwar into action within the rack or boltrunway in the frame of the window, 9 and 9 are respectively pin and ball-socket pivots for sustaining the operating lever, 10 is the arm of the o crating lever, 11 is a dog on the arm (10 engaging with the lug ((5) for o crating the bolt (7) by hand, 12- is a t umb piece on the arm (10) for operating the bolt, 13- is a thumbrest attached to the case (2), 14 is the window frame, 15 is the window-sill, 16- IS the sash-runway in the frame of the Window, 17- is the back part of the rack or bolt-runway, l8, 18, etc, are full width ratchet-toeth or lugs, lib are serrations or teeth placed staggered with each other on each inner side-wall of the rack with a space between the end or point of each tooth and the opposite side-wall sutlieicnt to allow the bolt to freely pass through.

20- is :1. lug for looking the window when closed all the way down, 2l-- is the glass in the sash.

The operation is as follows: By n'ossnre upon the thumb piece ('12) the bolt (7) is drawn back out of the action within the rack or boltru'nway to allow the sash to be freely raised or lowered. ll' prossuro on the thumb piece ho removed at a point when the bolt is anywhere abovo tho l'ull ratchet tooth (18) the bolt hoad (7) will be forced forward by the spring and rest upon and be hold by one of the staggered tooth or serrations (19) in the upper part oi the runway so long as in a state of rost, but after the car begins to move the resultant shaking and jarring will cause the bolt to slowly slide along the inclined upper surl'aco ol' the short tooth or lug toward the opposite wall of th incl: or runway until the bolt (7) ('loars tho point of tho tooth or lug (ill) on which it rested. and allow the window to slide down by its own weight until the bolt re. on the next tooth or sci-ration at this other side of the runway; here it is again stopped and hold until the vibration or shaking action, asabove dcscribod, carrios the bolt (7) along the incline oi the tooth on that side and over against the opposite wall of the runway, again dropping the window as before described and so on throughout the serpentine channel l'ormed by the series of staggered serrations until the bolt rests upon the full size ratchet tooth US) where it permanently locks. If desired to place the window farther down, all that is required is to press up on the thumb )icco (12) and disengage the bolt (7) l'roin lug (18") and lower the window by hand, to 18" or 18, &e.

The opening -l in tin look-case is suiiicicntly wider than the bolt 7 to allow the required lateral play of the latter in l'ollowing the staggered or serpentine path above described, and the lug 6 on the bolt 7 is of sufliciontly loss width than the space between the side walls of the locleraso to permit such ver 10.

in the modified form of the invention shown in Figs. VI VII the bolt and operating lever are in a single piece suspended by a ball and socket joint at 9" with freedom to oscillate in both directions as required.

I claim:

1. A rack, inwardly-projecting alternatelyspaced serrations on the inner faces of the side walls of said rack, forming a serpentine channel therein, adapted to serve With a sash lock having a laterally-swinging retractable bolt arranged automatically to engage and release said serrations successively and to traverse said channel.

2. A rack, ratchet teeth at the lower ortion thereof, and inwardly-projecting, a ternately-spaced serrations on the inner faces of the side Walls of said rack at the upper portion thereof, forming a serpentine channel therein, adapted to serve with a sash-locl having a laterally-swinging retractable bolt arranged automatically to engage and release said serrations successively and traverse said channel, and to engage said ratchet teeth.

3. A sash-lock comprising a casing having an opening, -a bolt projecting through such 0 ening and arranged to swing laterally t ierein between the side Walls of'said casing, and a spring exerting its force to hold said bolt yieldingly protruded through such opening, in combination with a rack, ratchet teeth on the lower ortion thereof, and inwardly-projecting a ternately-spaced serrations on the inner faces of the side Walls of said rack at the upper ortion of the latter, forrnin a serpentine c annel therein, said bolt a apted automatically to engage and release said serrations successively and traverse said channel by swinging laterally in said casing, and to engage said ratchet teeth.

MERRITT W. GRISWOLD.

Witnesses:

GEORGE H. BROWNE, ETHEL B. TAYLOR. 

